LANGFORD CANOE & WOODWORKING DERRICK CONSTRUCTION CO INC ADVANCE YACHTS INC MARKOS YACHTS LTD DE ROUVILLE'S BOAT SHOP DEWEY ELECTRIC INC DINGHY DEVELOPMENT LTD CAT SCULLS ASTROLABE MARINE INC DAVIS CUSTOM BOAT & WD CAPE COD FROSTY BLACKSTONE MARINE INC